It has higher efficiency.
Hence there is no voltage drop across brushes.

It has moderate efficiency.

The output power/frame size is higher.
It leads to superior thermal characteristics which results in size reduction. Because BLDC has the windings on the stator, which is connected to the case, the heat dissipation is better.

The output power/frame size is moderate or low.
The heat produced by the armature is dissipated in the airgap, thus increasing the temperature in the airgap and limiting specs on the output power of the frame size.

Rotor inertia is low. Because it has permanent magnets on the rotor.
This improves the dynamic response.

Rotor inertia is higher.
This limits the dynamic characteristic.

The speed range is higher.
Hence no mechanical limitation is imposed by brushes or commutator.

The speed range is lower.
It enables mechanical limitations by the brushes.

It generates low electric noise

Arcs in the brushes will generate noise causing EMI in the equipment nearby.

The cost of building higher. Because it has permanent magnets.

The cost of building lower.

Motor control is complex and expensive.

Motor control is simple and inexpensive

A controller always required to keep the motor running.
The same controller can be used for variable speed control.

No controller is required for fixed speed.
A controller is required only if variable speed is desired.